Is this pick good?

I am auctioning a Diamond Pickaxe with enchantment Efficiency II which is unused.

* Minimum bid/reserver price: 150 rupees* Voting will end 12 hours after the last bid* You must collect the item from my lot [627] - I will set up a chest for you* Non-payment or messing around will result in not being allowed to participate/get the pickaxe* Rupees only! I will not trade for diamonds or anything else.

EDIT: make sure to check out my res, it would really help!EDIT: it has been used once. (blurdeh friends)